Consider the data used in Example of a V-Mask CUSUM Chart, where the machine fills 8-ounce cans of engine oil. In order to cut costs, the manufacturer is now concerned about significant over-filling (and not so concerned about under-filling). Use a one-sided CUSUM chart to identify any instances of over-filling. Anything that is 0.25 ounces beyond the mean of 8.1 is considered a problem.
1.
Select Help > Sample Data Library and open Quality Control/Oil1 Cusum.jmp.
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Select Analyze > Quality And Process > Control Chart > CUSUM.
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Deselect Two Sided.
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Select weight and click Process.
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Select hour and click Sample Label.
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Click H and type 0.25.
7.
Click Specify Stats.
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Figure 5.8 One-Sided CUSUM Chart for Oil1 Cusum.jmp Data

Help created on 10/11/2018